• DocumentCode
    2233156
  • Title

    Vector Quantizer design by conjugate gradient optimized hyperplane

  • Author

    Kam-Tim Woo ; Kam-Fai Chan ; Chi-Wah Kok

  • Author_Institution
    Dept. EEE, Hong Kong Univ. of Sci. & Technol., Kowloon, China
  • fYear
    2002
  • fDate
    3-6 Sept. 2002
  • Firstpage
    1
  • Lastpage
    4
  • Abstract
    An Vector Quantizer design method by adaptive hyperplane generation using conjugate gradient optimization is proposed. The generated hyperplane is a perpendicular bisector of the clustering set centroids at each stage of the K-dimensional search tree, thus eliminated misclassification error associated with hyperplane based vector quantization. Simulation results on Vector quantization image coding is presented and compared with that obtained by other algorithms in literature. Where the results showed that the proposed algorithm can achieve better PSNR image coding results than that obtained by other algorithms. The generated K-dimensional search tree vector quantizer facilities computational efficient quantization process.
  • Keywords
    conjugate gradient methods; image coding; image denoising; pattern clustering; tree searching; vector quantisation; K-dimensional search tree vector quantizer; PSNR image coding; adpative hyperplane geneartion; clustering set centroid perpendicular bisector; conjugate gradient optimized hyperplane; misclassification error eliminated; vector quantization image coding; Abstracts; Boats; Clocks;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Signal Processing Conference, 2002 11th European
  • Conference_Location
    Toulouse
  • ISSN
    2219-5491
  • Type

    conf

  • Filename
    7071973